Tropical storm Isaac sweeps through the Caribbean and approaches New Orleans

Tropical Storm Isaac had nearly reached hurricane strength as it bore down on
the US Gulf Coast on Tuesday and appeared to be taking direct aim at New
Orleans, almost seven years to the day since the city was devastated by
Hurricane Katrina. Isaac killed at least 22 people and caused significant
flooding and damage in Haiti and the Dominican Republic and downed trees and
power lines in Cuba before skirting the southern tip of Florida on Sunday.

Above: Catiana Pierre and her brother Dickenson Prudhomme walk up a hill
near the Marassa 14 Tent City in Haiti, where their family's tent collapsed
overnight as Tropical Storm Isaac swept through the area